module IdJumpAddr(
    input [25:0] instr_index_of_inst,
    input [31:0]  Pc4_from_IF_ID,
    output [31:0] JumpAddr_to_IF
);

assign JumpAddr_to_IF = {Pc4_from_IF_ID[31:28],instr_index_of_inst[25:0],2'b0};
endmodule